Boiler



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BOILER.

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BOILER. A No. 385,830. Patented July 10, 1888.

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3 Sheets-Sheet 3. C. WHEAT.

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BOILER.

No. 885,830. Patented July 10, 1888.

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BY M) azw *M ATTORNEYS WITNESSES ihnrrn rarns CORYDON \VHEAT, OF GENEVA, NE\V YORK.

BOILER.

SPECIFICATION forming part of Letters Patent No. 385,830, dated July 10, 1888.

Application filed December 15,1857.

T0 aZZ whom it may concern:

Be it known that .l, OoRYDoN .Vuna'r, of Geneva, in the county of Ontario, in the State of New York, have invented new and useful Improvements in Hot-\Vater and Steam Boilers, of which the following taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates in some respects to the class of boilers which are composed of annular water-pipes arranged one above the other, and communicating with each other and with a water -wall constituting the fire-pot wall, and a dome mounted on the aforesaid pipes and communicating with the same.

The invention consists in an improved construction and combination of the component parts of the boiler and auxiliary devices connected therewith,whereby the efficiency of the boiler is increased.

In the annexed drawings, Figure 1 is a front elevation of my improved double boiler. Fig. 2 isavertical longitudinal section of the same. Figs. 3 and 4 are horizontal transverse sections respectively on lines it a: and y y, Fig. 2. Fig. 5 is a horizontal section on line z .2, Fig. 2, showing the arrangement of the exit-- pipe in relation to the boiler. Fig. 6 isan enlarged detached plan view of one of the sections of the water-pipes which constitute a portion of the boiler proper. Fig. 7 is a detached perspective view of the improved baffle-plate, and Fig. 8 is a detached perspective view of the damper employed in connection with the aforesaid baffle-plate.

Similar letters of reference indicate corre' sponding parts.

A represents the ash-pit, which constitutes the base of the boiler; and B, the fire-pot mounted on said ash-pit, and provided with a suitable grate upon which to support the fuel in the firepot. The fire-pot wall is a hollow annular iron casting constituting a part of the waterspace of the boiler, the feed -water pipe or return water-pipe a being connected to said fire-pot wall.

0 0 denote annular water-pipes arranged one over the other and over the fire pot wall, and G O are annular water-pipes of smaller circumference than the pipes O O, and arranged with their greater circumference concentric with the smaller circumference of Serial No. 257,932, (No model.)

said pipes and connected thereto by radial pipes G 0. Each of the pipes O C, I form of segments which are closed at their ends, and are provided at the top and bottom with ports I) b, by which they communicate with the segments of the superposed pipe and subjaccnt pipe. A hollow dome or cap, I), is arranged above the aforesaid pipes and communicates with the ports 7) b of the subjacent large pipe 0. qtods c a, passing vertically through the dome and through the pipes O C at the ports thereof and through the fire-pot wall, tie said parts together. The aforesaid pipes and dome are supported at their requisite distanees apart by flanges e e on their ad jacent sides, and by the interposition of said flanges between the aforesaid parts a combustion-chamber, F, is formed over the [ire-pot. A shell, (Z, surrounding the exterior of the pi pes O Gand fire-pot wall and set closely to said pipes, forms annular flues ffbetween the outer por-' tions of the pipes C G, which flues communicate with the combustionchamber F by ports M in the flanges c c at the rear of the combustiouchambcr. The shell (I is provided with ports Z Z at the front of the boiler, and thus the products of combustion are caused to circulate from the ports in opposite directions through the tlues ffand out through the ports ll, as indicated by arrows in Fig. 4 ofthe drawings. G represents the usual casing,which incloscs the fire pot and superposed water-pipes and forms a smoke-box around the same, the exit H being connected to said smoke-box, preferably to the top thereof, to carry off the smoke.

In order to retain the heat around the boiler as much as possible without unduly choking the draft through the fire-pot, I arrange between the casing G and shell (1 cylindrical baffle-plates 1 and P, the plate P being nearest to the shell (I and rising from the bottom of the aforesaid smoke-box part way the height thereof, and the plate 1? being between the plate 1 and easing G and suspended from the top of the smoke-box, and terminating some distance below the top of the plate P, as illustrated in Fig. 2 of the drawings, the arrangement of the aforesaid parts being similar to that shown in my pending application for patent, Serial No. 244,247, filed July 14, 1887.

My present improvement, in regard to the boiler thus far described, consists in the construction of the baffle-plate P, which I provide with ports 1) 19 through its sides, as shown in Fig. 7 of the drawings, and around the exterior of said plate I fit a cylindrical damper, O. of the form shown in Fig.8 of the drawings, which'damper is adapted to be turned around on the baifie-plate,and is provided with ports 0 0, adapted to register with the ports 1) p, the solid portions 0 0 between the ports 0 0 being adapted to close the ports 19 10. By opening the ports 1) p ready access is obtained to the space inside of the baflieplate P to remove the soot and dust therefrom when required.

The base of the casing G is composed of castiron and provided with doors I I, through which to remove the soot and dust from the base of the smoke-box inside of the casing.

Vertically through the center of the dome D is extended a cylinder, L, which has secured to its upper end an annular cap,L, from which issuspended the fuelmagazine M. The latter, being smallerin diameter than the cylinder L, forms between them an annular flue, N, which communicates with the combustionchamber F. A pipe, R, is extended from the flue N to the exit-pipe H, and thus a direct draft is obtained from the combustion-chamber to the exit-pipe.

The pipe R is provided with a damper, g, which can be closed after the fire in the firepot is fairly under way, and then the products of combustion are compelled to take the more circuitous passages through the ports ii, fines ff, ports Z Z, down at the inside of the baffle plate P, and up at the outside of the same to the exit-pipe H, and during this passage the boiler is allowed to absorb the heat from the products of combustion.

It frequently occurs that, owing to enlargement of the building in excess to the size originally contemplated to be heated by the boiler, the latter is found inadequate. To meet this emergency I have devised to connect two boilers, each constructed as aforesaid and arranged side by side, and connected with each other at their water and steam spaces or at their bases and tops, respectively, by the wa tor-pipe h and .water or steam pipe It. Said boilers I i nclose each in a separate easing, G, so as to allow the two boilers to be operated separately when desired. The two casings I preferably form of two cylindrical end plates surroundingone-halfofeachboiler,andstraight or tangential front and rear plates connecting the aforesaid end plates, and a partition-plate Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In combination with the boilerand smoke box surrounding the same, the baffle-plate P, suspended from the top of the smoke-box, baiile-plate P, of cylindrical form, rising from the base of the smoke-box and provided with ports pp, and a cylindrical damper, O, sliding on the latter baffle-plate and provided with ports 0 0, adapted to register with the ports 1) p, substantially'as described and shown.

2. In asectional boiler, the water-pipes O O, composed of segments closed at their ends and provided with ports communicating with the segments of the superposed pipe and subjacent pipe, substantially as set forth and shown.

3. In a sectional boiler, the pipes G 0, arranged annularly one inside of the other, and each of said pipes composed of segments closed at their ends, and the outer segments provided with ports at the top and bottom communirating with the segments of the superposed pipe and subjacent pipe, and radial pipes G, connecting the outer with the inner segments, substantially as described and shown.

In testimony whereof I have hereunto signed my name, in the presence of two witnesses, at Geneva, in the county of Ontario, in the State of New York, this 7th day of December, 1887.

CORYDON WHEAT. [L. s] \Vitnesses:

PHINEHAS PURDY, W. H. VROOMAN. 

